Fiber-drying machine



(Nq Model.) 2 sheets-sheet 1.

T'. G. &`A.`G. SARG'ENT FIBER DRYING MAGHINE.

Patented Mar. 4, 1884.

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(No Model.) 2 sheetssheen 2.

11G. au A. o. SARGENT. FIBER DRYING MACHINE.

No. 294.510. Patented Mar. 4, 1884.

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Y NerTnn STATES FREDERICK G. SARGENT AND' ALLAN C. SARGENT, OFGRANITEVILLE PATENT OFFICE.

MASSACHUSETTS.

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SPECIFICATION ferming'pert ef Lettere Patent Ne. 294,510, dated Meren 4,ieee.v

Application tiled November 13, 1882.

Be it known that we, FREDERICK G. SAR- GENT and ALLAN C. SARGENT, ofGraniteville, in the county .of Middlesex and State of Massachusetts,have invented a new and useful Improvement in Fiber-Drying Machines, ofwhich the following is a specification.

Our improvement relates to machines `for drying wool and other bersbyair-currents; and it consists in subjecting the samealternately tocontinuous currents of air from opposite directions, substantially ashereinafter described. A

In the drawings, Figure 1 is a' side view of a wool-drying machineconstructedaccording to our invention. Fig; 2 is a vertical centralsection longitudinallythrough the same. Fig. 3 is a transverse verticalsection of Fig. 1.

A is the outer casing ofthe machine.

c is the traveling perforated screen passing around cylinders or drums 88.

tl is a similar perforated screen passing around drums 9 and 9c.

eis the feed-apron to deliver the ber between the screens, which carryit-along and deliver it into exit-spoutf. The feed-apron travels aroundrolls E E, which rotate in the usual manner. A check or stop roll, E,prevents the escape of air at this end of themachine while assisting tofeed the ber forward. This check or stop roll rises freely up and down,and is for the purpose of llingthe entire space above the wool, throughwhich air can escape at this end of the machine, while allowing the woolto pass into the machine freely, and it so adjusts itself as to llsubstantially this entire space while rising and falling. On the side ofthe machine is a box, 2, into which the blast-pipeG delivers acurrent ofair by means of a fan or other appropriate device of ordinaryconstruction and attachment thereto, which need not be furtherdescribedor shown, being well known'. At the top and bottom of box 2 areair-passages l 1, through which the air passes into chambers 3 3 aboveandloelow the perforated aprons or screens c and d. The travelingscreens c d are so placed in the machine that their surfaces (No model.)

which are opposite to each other are separated by a sufcient space toallow the ber between them to lie loosely and be opened up by theair-currents, and not compressed or matted between these surfaces, whichwould materially retard the passage of the air-currents through the `berand consequent drying of it. From lower chamber, 3, the air -blastpasses into chambers 4t 4, thence upward through the screens and berbetween them into chambers 5 5, and thence out through passages a a inthe side of the machine. In like manner, from upper chamber, 3, the airpasses down-h wardinto chambers 6 6, and through the screens andintervening ber into similar` chambers, 7 7, and out through holes b b.Thus, while carried forward by the movement of the screens c d, the woolis rst subjected, between ehambers'G and 7, to a downward aircurrentthat presses it against screen el, and

next, between chambers 4 and 5, it is subjected to an upwardair-current, which liftsit against screen c and shakesv apart its bers,and so on alternately until it is delivered at pipe f. At f the pipe fis brought near enough to screens c and d to doff the wool. off them,and the air-current aids to carry it out through pipe f. The pipe f isas wide as the Screens c and cl. 1

The stirring and opening of the ber by alternate currents of air effectsa very rapid drying process, and does not injure the ber.

What we claim as new and of our invention is Y 1. In combination withthe moving screensurfaces c and d, the alternate air-passages 4 5 and 67, adapted to convey the air-blast in opposite directions through theber, substantial-ly asdescribed.

`2. In a wool-drying machine, the combination, with two hmovingscreen-surfaces, c d, placed far enough apart -to allow the ber to lieloosely between them, of the airdelivery and escape passages 4 and 5above and below said screen-surfaces, substantially `as described.

3. In combination with screens c d, the passages 6 7 and 4 5, andpassages 3 3 and 2,

leading from the air-pipe G, substantially as iber from the screens7substantially as dedeseribedscribed.

.4. In combination with the screens c d 112W- 1 4 f 1 ing :L spacebetween them, and passages 6 7 5 and 4 5, the feed-apron e, and airstop-11011 E, L

substantially as described. Vitnesses:

5. In combina-tion with the screens c d, the DAVID HALL RICE,

tubef, having its edges arranged to deff the N. P. OCKINGTON.

